SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To suppress application of a stress to an optical sheet present in an area formed by an aperture.SOLUTION: An optical sheet portion 22 is constituted by one or more optical sheets 2. A notch portion H2 and a slit SL1 are provided in the optical sheet portion 22. A protrusion portion X1 is provided to contact a notch-side end portion that is an end portion of the optical sheet portion 22 in contact with the notch portion H2. The slit SL1 is provided between the notch portion H2 and an aperture H1 on an XY surface.SELECTED DRAWING: Figure 4